EllieLouise2000 EllieLouise2000

28-10-2015
Mathematics

contestada

Solve this simultaneous equation?

4x + y = 25
x - 3y = 16

Respuesta :

giuxebom giuxebom

28-10-2015

x-3y=16 -> x=16+3y Put this x into the first equation -> 4(16+3y) +y=25 -> 64+12y+y=25 -> 13y=25-64 -> y= -3 Put this y into first or second equation ( it's up to you :) X-3y=16 -> x-3(-3)=16 -> x+9=16 -> x = 7 --->> (7;-3) Good Luck

Answer Link

Otras preguntas

1. Adrián es estudiante.  True/  False    2. Adrián trabaja en la cafetería todas las noches.  True/  False   3. Adrían estudia para ser doctor.  True/  Fals

what is the area of this parallelogram? A 10.35 cm2 B 12.5 cm2 C 20.25 cm2 D 30.6 cm2

Kaleb brougt 4.35 pounds of bananas , 3.89 pounds of oranges ,and 2.13 pounds of avocados .what is the total weight fruit kaleb brought?

How would living in poverty put stress on a person’s body? What illnesses or injuries might be induced/caused by poverty?

Solve x^2=12x-15 by completing the square. Which is solution set of the equation

Find the area of the figure. A: 10.3 ft^2 B: 20.52 ft^2 C: 18.12 ft^2 D: 41.04 ft^2

Find the area and perimeter of triangle ABF with F(-3,0), A(1,3), and B(7,-5)

A student compared DNA replication to making a photocopy of a document . How to best describe the discription ?

how does the area of triangle ABC Compare to the area of parallelogram ghjk

Daryl is the founder of a successful smartphone application. He is detail-oriented and has high expectations of his employees. He rewards them with bonuses for